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F Loschiavo

Publications and source records attributed to F Loschiavo.

At least 19 recordsLinked to original sources
PubMed1994

Influence of imaging ability on word transformation.

In the present study, we examined whether individual differences in imaging ability affect visual word recognition. Poor and vivid imagers performed a naming task that involved nonreversed (e.g., JUMP) and reversed (e.g., PMUJ) words (Experiment 1). Poor and vivid imagers were also tested on a naming task that was controlled for verbal ability; all the words were reversed and presentation time was varied (Experiment 2). In both experiments, imaging ability interacted with task difficulty, suggesting that individual differences in imaging ability affect visual word recognition. Specifically, the present data suggest that poor imagers may be less efficient than vivid imagers at processing words analytically. The data are interpreted within a limited-capacity, hybrid, word recognition model, in which words can be processed as either word-level or letter-level codes.

Adult↗
PubMed1991

Modulation of auxin-binding proteins in cell suspensions : I. Differential responses of carrot embryo cultures.

This paper shows that the level of 2,4-dichlorophenoxyacetic acid (2,4-D) in the medium determines the level of auxin-binding proteins in the membranes of carrot, Daucus carota, cells grown in suspension. This induction takes slightly more than 2 hours to complete and can be elicited by natural as well as synthetic auxins. The auxin binding sites thus generated, which are pronase-sensitive, bind 2,4-D, indoleacetic acid, and naphthalene-acetic acid (NAA) equally well. However both alpha- and beta-NAA bind, whereas only alpha-NAA is effective in the inductive process. Cells committed to embryogeny (proembryogenic masses) do not respond to auxin, i.e. their level of auxin-binding proteins remains very low, and they do not seem to synthesize the hormone, as indicated by inhibitor studies. Sensitivity to, and production of, auxin, begins when the embryo becomes polarized, i.e. at postglobular stage.

Journal Article↗
PubMed1990

[C. pylori colonization of the mucosa in patients with chronic ulcerative and non-ulcerative gastropathies].

C. pyloridis colonization was investigated in a selected group of 58 patients with upper gastrointestinal disorders submitted to endoscopy and biopsy. The following results were registered. C. pyloridis was isolated in 14 out of 18 cases of active chronic gastritis, in 15 out of 24 cases of non active chronic gastritis, and 7 out of 8 cases of antral ulceration. A negative finding was registered in 8 patients whose gastric mucosa was normal. Therefore, the Authors consider as valid the etiopathogenetic correlation between C. pyloridis and ulcerative or non-ulcerative chronic gastric diseases, suggested by others.

Adult↗
PubMedDate not supplied

[Biochemical, enzymatic and cultural characteristics and criteria of pathogenicity of staphylocci (study of strains isolated in a hospital environment)].

The Authors have examined the coagulase activity, mannitol fermentation, DNase and phosphatase activity, and production of haemolisins and pigment on 200 strains of Staphylococcus isolated from hospitalized patients affected by various diseases. On the basis of results obtained, they conclude that the evaluation of the pathogenic power of Stah. aureus should be always founded upon a "pattern" of biochemical, enzymatic, cultural and toxinogenetic tests.

Coagulase↗
PubMedDate not supplied

[L forms of Staphylococcus aureus. Behavior of coagulase, hemolytic and desoxyribonuclease activities and antibiotic sensitivity].

L Forms derived from strains of coagulase positive Staphylococcus aureus, have, on the whole, preserved their DNAsic, haemolitic and coagulastic activities. L. forms showed high resistence to antibiotics acting on the bacterial cell-wall. The sensibility to other antibiotics was, roughly, analogous for the L forms as well as for the bacterial strains ones, with the exception of the clortetraciclin and the diidrostreptomicin, ehich proved to be comparatively more active on the L forms.

Anti-Bacterial Agents↗